Help finding someone that can combine pet pictures

My wife and I have 10 dogs, and getting them all to pose for a photo at the same time is basically impossible. We do have multiple nice individual photos of them, and I’m trying to find someone that could put all of us into one picture and have it look like we’re all really together. I tried searching online, but all I got were ads for apps which doesn’t help me. I was referred here by another subreddit-any advice on what type of service I should be searching for? This would be a gift, so I’d want something high quality that I could hang on a wall. Not sure about the dimensions yet, but I’d like for it to be on the bigger side (maybe 36” wide as a reference?)

Thank you!!!!